Types of Influencers by Audience Size
Influencers are typically categorized by follower count:
- Mega-influencers: 1M+ followers — celebrities and major creators; maximum reach but lowest engagement rates and highest cost
- Macro-influencers: 100K–1M followers — mainstream creators with broad appeal
- Micro-influencers: 10K–100K followers — niche authority, high engagement, often the best ROI for B2B and specialized verticals
- Nano-influencers: Under 10K followers — highly trusted within tight communities, very high engagement rates, often willing to work for product value or small fees
Why Micro-Influencers Often Beat Mega-Influencers
Counter-intuitively, smaller influencers often outperform larger ones for conversion campaigns because:
- Their audiences are more niche and self-selected (higher relevance)
- Follower relationships are more personal (higher trust)
- Engagement rates are 5–10× higher than mega-influencers
A collection of 20 micro-influencers (10K–50K each) can outperform a single mega-influencer at a fraction of the total cost.
Types of Influencer Partnerships
- Sponsored posts: Paid placements disclosed with #ad or #sponsored
- Product gifting: Free product in exchange for honest coverage (no guaranteed post)
- Affiliate arrangements: Influencer earns a commission on sales they drive
- Brand ambassadorships: Long-term partnerships for consistent brand association
- Content creator arrangements: Influencer creates content you own and repurpose
FTC Disclosure Requirements
In the US (and similar regulations globally), paid partnerships must be disclosed clearly. "#ad," "#sponsored," or "Paid partnership with [Brand]" labels are required when there's material compensation.